Vicidomini, R
Di Giovanni, A
Petrizzo, A
Iannucci, L F
Benvenuto, G
Nagel, A C
Preiss, A
Furia, M
Article History
Received: 20 October 2014
Revised: 11 February 2015
Accepted: 12 February 2015
First Online: 26 March 2015
Competing interests
: The authors declare no conflict of interest.